Gauge body



FIG. 1 is a front view of the gauge body.

FIG. 2 is a top view thereof.

FIG. 3 is a right side view thereof. The left side view is a mirror image of the view of FIG. 3; and,

FIG. 4 is a perspective view of the gauge body. 

The ornamental design for a gauge body, as shown and described. 